Camera.



W. SWANK.

CAMERA.

APPLIOATION FILED MAY 20, 1914.

1 1 33,891, Patented Mar. 30, 1915.

wILLiAM swmx, or ,ALTOONA, PENNSYLVANIA.

CAMERA;

Specification of Letters Patent. Patent d lu 30 19151 Application filed May 20, 1914. Serial No. 839,771.

for its specific object improved means for operating the shutter, such that the timing feature can be so adjusted and set as to operate the shutter at. any desired predetermined instant, which is a feature highly appreciated by-the amateur photographer.

Another object of this invention is to pro vide a shutter operating device that is simple in its construction and at the same time possessing features that make it readily applicable to existing cameras.

A still further object of this device is to provide a timing shutter operating mechanism that is readily adjustable to a wide range of time, thus permitting the photographer to pose for his own picture without risk of a ruined plate or film by virtue of camera movements which are common with most shutter operating mechanisms.

With these and many other objects in view, which will more readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated and claimed.

It will be readily understood that this invention is quite susceptible to a wide range of structural modification without departing from the spirit or scope of the invention,

but a preferred and practical embodiment of the invention is shown in the accompanying drawings in which- Figure 1 shows the present invention in operative position-on a camera and fully illustrates the manner in which the shutter tappet is moved by the timing mechanism tappet. Fig. 2 is 'a plan view of the parts shown in Fig. 1.

Similar reference numerals indicatesimilar parts throughout the figures ofthe draw -1ngs.

In carrying out this resent invention no change is contemplate 1n the usual con struction of the camera, lens or shutterand to this end I construct-a time shutter oper ating. gear designated; in, entirety by? the numeral suitably attached to the camera 11 b means of a timin su ort bracket 12. Y pp The shutter operating gear, designated by the numeral 10, essentially consists of a power element, a train of gears, means for controllmg the speed of the gears, and a timing geartappet for engaging the shutter tappet. In the construction of this timing gear Iprov1de a main spring 13 positioned Within a casing 14,- from which protrudes a winding post 15. Attached to the winding post 15, which is rotated by the spring 13,

is a disk 16 carrying a pivoted tappet arm 17, which is designed to impinge upon and actuate the shutter tappet 18 of the camera 11.

Suitablysecured to the rotating post 15 1s a main gear train driver 19, the teeth of whlch mesh with and rotate the pinion 20, which is positioned on a post 21 and carries as an integral part of the pinion 20, a gear 22. The teeth in the gear 22 mesh with and rotate the pinion 23, which is an integral part of a gear 24, positioned on and rotating around a post 25. The gear 24 likewise meshes with and rotates a pinion 26 which is made integral with a gear 27, rotating upon a common post 28. a

The gear 27 meshes with a pinion 30 which carries a brake 31, which is designed to impede the motion of the gear train. Cooperating with the brake3l, is an auxiliary brake 32, which is in the form of a cantaliver fixed at one end as at 33, while the free end 34 is adapted to be pressed against the pinion shaft.35, by the spring 36, which is adapted to have a range of movement concentric with the center. of the case for the purpose of applying or releasing the auxiliary brake.

In using a camera to which this invention has been applied, the operation may be described as follows: First the timing tappet 17. revolved away from the shutter tappet 18 and the auxiliary brake 30 is set by moving the peripheral projection 37 upward. The number of degrees that the arm 17 is re? volved backward will depend upon the time the operator wishes to give himself before the shutter opens for exposing the negative. The camera is then focused, the pro ection 37 is pushed down and the train of gears start gradually bringingthe'arms 17 and 18 together, as shown in Fig. 1 at which time the shutter opens and the negative is exposed. Without further description and elabora- A shutter )perating attachment for cameras, comprlsmg a circular easing,'a spring actuated shaft journaled insaid casing, a rotatable diskcarried by said shaft, a shutter operating trip arm pivotallycarried by said disk, a gear train operatively connected to the said spring actuated shaft, a brake -for the gear train, an auxiliary "brake de-' vice including a flat spring element having one end fixed in the casing and its opposite free end in contact with said brake, and a finger controlled s ring arranged between said flat spring an the wall of the circular casin said finger controlled spring shiftable 1n the casing to vary its tension and move its free end toward and from the free end of said flat spring.

In testimony whereof I aflix my signature in presenceof two witnesses. WILLIAM SWANK.

Witnesses:

B; O. MGCQRMIC N. E. GEE. 

